Communications: radio wave antennas – Antennas – With vehicle
Reexamination Certificate
2005-05-24
2005-05-24
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
With vehicle
C343S7000MS, C342S070000
Reexamination Certificate
active
06897819
ABSTRACT:
A near-field radar apparatus includes a fixed beam planar radar antenna and a radiation pattern adaptation device disposed substantially at the near-field boundary of the antenna. The adaptation device comprises a plurality of dielectric elements that individually constitute or approximate different surface portions of an idealized quasi-spherical or quasi-cylindrical radome reflector. The dielectric elements can be maintained physically separate or combined about the diffraction point of the antenna to form a single dielectric element. The dielectric elements may be mounted on a radome that is otherwise transparent to the radiation pattern, or otherwise suspended at or near the near-field boundary of the antenna.
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Henderson Mark F.
Taylor Ronald M.
Chmielewski Stefan V.
Le Hoang-anh
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